$ git clone -n https://gitee.com/src-opencloudos-rpms/osbuild-composer /var/lib/mock/dist-oc9-build-57283-15520/root/chroot_tmpdir/scmroot/osbuild-composer
Cloning into '/var/lib/mock/dist-oc9-build-57283-15520/root/chroot_tmpdir/scmroot/osbuild-composer'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/osbuild-composer
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b35aa5 !3 add support for oc9 Merge pull request !3 from Fanjun Kong/oc9